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aco: consider blocks unreachable if they are in the logical cfg

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backport of 9392ddab43

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4888>
This commit is contained in:
Rhys Perry 2020-04-27 13:53:59 +01:00 • committed by Dylan Baker
parent 7d00190859
commit 58653838f5
1 changed files with 2 additions and 3 deletions
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5
src/amd/compiler/aco_instruction_selection.cpp
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@ -8276,7 +8276,6 @@ static bool visit_if(isel_context *ctx, nir_if *if_stmt)
ctx->block = ctx->program->insert_block(std::move(BB_endif));
append_logical_start(ctx->block);
}
return !ctx->cf_info.has_branch;
} else { /* non-uniform condition */
/**
* To maintain a logical and linear CFG without critical edges,
@ -8312,9 +8311,9 @@ static bool visit_if(isel_context *ctx, nir_if *if_stmt)
visit_cf_list(ctx, &if_stmt->else_list);
end_divergent_if(ctx, &ic);
return true;
}
return !ctx->cf_info.has_branch && !ctx->block->logical_preds.empty();
}
static bool visit_cf_list(isel_context *ctx,